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GeForce GTX 570 vs Radeon HD 4850 X2 512MB

Intro

The GeForce GTX 570 features a core clock frequency of 732 MHz and a GDDR5 memory speed of 950 MHz. It also uses a 320-bit bus, and uses a 40 nm design. It features 480 SPUs, 60 Texture Address Units, and 40 ROPs.

Compare all that to the Radeon HD 4850 X2 512MB, which has a clock speed of 625 MHz and a GDDR3 memory frequency of 993 MHz. It also features a 256-bit bus, and makes use of a 55 nm design. It is made up of 800(160x5) SPUs, 40 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 570 219 Watts
Radeon HD 4850 X2 512MB 250 Watts
Difference: 31 Watts (14%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 570 is 20% quicker than the Radeon HD 4850 X2 512MB overall, due to its greater data rate. (explain)

GeForce GTX 570 152000 MB/sec
Radeon HD 4850 X2 512MB 127104 MB/sec
Difference: 24896 (20%)

Texel Rate

The Radeon HD 4850 X2 512MB should be a small bit (approximately 14%) more effective at texture filtering than the GeForce GTX 570. (explain)

Radeon HD 4850 X2 512MB 50000 Mtexels/sec
GeForce GTX 570 43920 Mtexels/sec
Difference: 6080 (14%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 570 is superior to the Radeon HD 4850 X2 512MB, and very much so. (explain)

GeForce GTX 570 29280 Mpixels/sec
Radeon HD 4850 X2 512MB 20000 Mpixels/sec
Difference: 9280 (46%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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GeForce GTX 570

Amazon.com

Check prices at:

Radeon HD 4850 X2 512MB

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce GTX 570 Radeon HD 4850 X2 512MB
Manufacturer nVidia AMD
Year December 2010 Nov 7, 2008
Code Name GF110 R700
Memory 1280 MB 512 MB (x2)
Core Speed 732 MHz 625 MHz (x2)
Memory Speed 3800 MHz 1986 MHz (x2)
Power (Max TDP) 219 watts 250 watts
Bandwidth 152000 MB/sec 127104 MB/sec
Texel Rate 43920 Mtexels/sec 50000 Mtexels/sec
Pixel Rate 29280 Mpixels/sec 20000 Mpixels/sec
Unified Shaders 480 800(160x5) (x2)
Texture Mapping Units 60 40 (x2)
Render Output Units 40 16 (x2)
Bus Type GDDR5 GDDR3
Bus Width 320-bit 256-bit (x2)
Fab Process 40 nm 55 nm
Transistors 3000 million 956 million
Bus PCIe x16 PCIe 2.0 x16 (PCIe bridge)
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Bandwidth is the maximum amount of data (counted in MB per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce GTX 570

Amazon.com

Check prices at:

Radeon HD 4850 X2 512MB

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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